Wedge-bolt.



PATENTED JUNE 13, 1905.

' W. THISSEN.

WEDGE BOLT.

APPLICATION FILED DEC. 22, 1904.

INVENTOR WMW EBXWAW BY ENGM WITNESSES: 714 6 ATTOR N EY NITED STATES Patented June 13, 1905.

IVALTER THISSEN, OF SAYRE, PENNSYLVANIA.

WEDGE-BOLT.

SPECIFICATION forming part of Letters Patent No. 792,181, dated June 13, 1905.

Application filed December 22, 1904. Serial No. 237,942.

To (LZZ whom, it may concern.-

Be it known that I, WALTER THIssnN, a citizen of the United States, residing at Sayre, in the county of Bradford and State of Pennsylvania, have invented a new and useful Improvement in lVedge-Bolts, of which the following is a specification.

My invention relates to an improvement in the bolts by which the wedge-blocks are adjusted in the pedestals for the journal-boxes of locomotive driving-wheel axles. The life of these wedge-bolts, owing to the continued jar and strain to which they are subjected, is of short duration and they have to be continually replaced. Heretofore, in order to insert a new bolt it has been necessary to remove the pedestal-brace at the bottom of the pedestal-legs, which consumes considerable time and frequently permits the journal-box to be thrown out of alinement or to become cramped in the pedestal.

The object of my improvement is, therefore, to provide means whereby these wedgebolts may be renewed from time to time in an expeditious manner and without the necessity of removing or displacing any parts of the locomotive-frame.

I accomplish my object by means of a screwthreadedblock pivoted in a slotted chamber in the pedestal-brace whereby the wedge-bolt may be screwed into and through the block and afterward thrown into proper alinement and engagement with the wedge-block, as ill ustrated in the accompanying drawings, in which- Figure 1 represents a side elevation of a portion of a locomotive-frame, showing the pedestal-legs for a main driver journal-box with my improved wedge-bolt construction applied thereto; Fig. 2, a transverse section of the same, showing an end view of the wedgeblook and the wedge-bolt block; and Fig. 3, a detail showing the wedge-bolt in position to be thrown into engagement with the wedgeblock.

Like letters designate likeparts in the several views.

A represents a portion of a locomotiveframe with the pedestal-legs for the journalbox C of a main driving-axle B. One leg of the pedestal stands vertically and is provided with the shoe D, which extends from top to bottom of the pedestal and forms a bearing for one side of the journal-box C. The other leg is inclined on its inner side to receive the wedge-block E, which is adapted to be adjusted by the bolt Gr, so as to permit the journalbox C to slide in the pedestal-frame without side play. In order that the wedge-block may be raised or lowered in adjusting it, the wedgebolt G is provided with a head H, which engages a grooved slot at the lower end of the wedge-block, and it will be evident that in order to insert this head in the slot the wedgebolt must be moved to one side. To accomplish this side movement Without removing the pedestal-brace F, I pivot a screw-threaded block I in a slot K, formed in the pedestalbrace, said slot being provided at front and rear with inclined sides L, so as to permit the block I to be tilted to one side on its trunnions J. This permits sufficient side motion in the wedge-bolt to allow the head to be thrown into or out of engagement with the wedge-block, as shown in Fig. 3.

When a wedge-bolt becomes broken, the parts will be removed from the wedge-block and from the block I and a new bolt will be inserted by screwing it through the block, the head H being of a diameter corresponding with the threaded hole in the block. WVhen the head has been brought into alinement with the slot in the wedge-block E, the bolt will be turned to vertical position and into engagement with said slot, the sides of the block I coming against the vertical sides of the slot K when in this position. After the wedgeblock has been properly adjusted by screwing the bolt G up or down to the required extent the flanged nut M will be screwed up against the bottom of the pedestal-brace F, thereby locking the block in its vertical position, and the parts will be further secured from displacement by means of the jam-nut N. In order to form the slotted chamber K to receive the block I and to insert said block in place, I make the pedestal-brace F in two parts, fastening the halves together by cross bolts and securing said brace to the main frame by means of vertical bolts in the usual 8. The combination, with a pedestal-brace, of a swivel-block housed in a slot passing 15 through the brace, a wedge-boltadapted to be screwed through said block, and a nut on the bolt to lock the block and bolt in their normal and adjusted positions.

In testimony whereof I have aflixed my sig- 2 nature in presence of two witnesses.

WVALTER THISSEN.

WVitnesses:

IKE SAMUnLs, J. H. SMITH. 

